CN211088152U

CN211088152U - Primary conductive structure of circuit breaker

Info

Publication number: CN211088152U
Application number: CN201922287000.5U
Authority: CN
Inventors: 倪金松; 汤仲伟
Original assignee: Changshu Switchgear Manufacturing Co Ltd
Current assignee: Changshu Switchgear Manufacturing Co Ltd
Priority date: 2019-12-18
Filing date: 2019-12-18
Publication date: 2020-07-24
Anticipated expiration: 2029-12-18

Abstract

A primary conductive structure of a circuit breaker belongs to the technical field of low-voltage electrical appliances. Including insulating sleeve and electrically conductive mechanism, electrically conductive mechanism includes wire outlet seat, upper bracket, vacuum interrupter, lower carriage and wire outlet seat down, and upper bracket and lower carriage are located insulating sleeve inside and upper and lower interval setting, and vacuum interrupter installs between upper bracket and lower carriage, and wire outlet seat down are installed respectively to the side of being qualified for the next round of competitions of upper bracket and lower carriage, characteristics: the inner wall of the insulating sleeve is correspondingly provided with a positioning piece protruding from the inner wall, and the positioning piece is used for positioning the lower bracket. The advantages are that: the insulating requirement of circuit breaker normal use is satisfied, improve switchgear's safety in utilization, and the design is simple, realizes easily, improves the result of use, reduces use cost.

Description

Primary conductive structure of circuit breaker

Technical Field

The utility model belongs to the technical field of electrical apparatus, concretely relates to once conductive structure of circuit breaker.

Background

The area with the altitude of more than 1000m is a high-altitude area in the general meaning of the people, the area with the altitude of more than 1000m in China occupies about 57.9 percent of the area of the national soil, wherein the area of 1000-2000 m land occupies about 25 percent of the area of the national soil, the area of 2000-3000 m land occupies about 7 percent of the area of the national soil, and the area of more than 3000m occupies about 25.9 percent. With the continuous deepening of the 'western large development' strategy and the gradual promotion of the 'one-path-by-one' strategy in China, the construction of electric power facilities in areas with the altitude of more than 1000m is developed vigorously, the economic development of the areas is obviously accelerated, the power consumption is rapidly increased, and the plateau type indoor high-voltage vacuum circuit breakers are used as power distribution equipment of a power system and have large demand.

For high-altitude-level circuit breakers, products provided in the market are few, so that some users are forced to select the circuit breaker in a high-generation-low mode, for example, a 24kV circuit breaker is adopted in a 12kV system to replace the circuit breaker, and although the use requirement can be ensured, unnecessary waste is caused economically. And users in some economically undeveloped areas select to modify insulation measures on the basis of the existing switchgear due to budget limitation, so that the use effect of the switchgear is greatly reduced, and insulation accidents are caused.

In the original primary conductive structure, the lower support is designed integrally and is generally processed in a copper and silver plating mode. After the lower bracket of the structure is installed on the primary conductive part, the corresponding part of the insulating cylinder shell becomes thin, an insulating weak point is formed, the air gap between the weak point and the installation screw of the circuit breaker is small, and the lower bracket is easy to break down when electrified and pressurized. In a high-altitude area, the air insulation performance is further weakened due to the fact that air is thin, and the lower support of the structure cannot meet the insulation requirement of normal use of the circuit breaker.

In view of the above-mentioned prior art, there is a need for a reasonable improvement of the primary conductive structure of the existing circuit breaker. The applicant has therefore made an advantageous design, in the context of which the solution to be described below is made.

Disclosure of Invention

An object of the utility model is to provide a circuit breaker's once conductive structure adopts protrusion to fix a position the lower carriage in the setting element of 1 inner wall of insulating sleeve to guarantee the insulating requirement of circuit breaker normal use, and simple structure, realize low cost easily.

In order to achieve the above purpose, the utility model provides a technical scheme is: the utility model provides a primary conductive structure of circuit breaker, including insulating sleeve and conductive mechanism, conductive mechanism include last outlet wire seat, upper bracket, vacuum interrupter, lower carriage and outlet wire seat down, upper bracket and lower carriage are located insulating sleeve inside and upper and lower interval setting, vacuum interrupter installs between upper bracket and lower carriage, and outlet wire seat down are installed respectively to the side of being qualified for the next round of competitions of upper bracket and lower carriage, it is provided with protruding setting element in the inner wall to correspond on insulating sleeve's the inner wall, the setting element right the lower carriage fix a position.

The utility model discloses a specific embodiment, the setting element on be equipped with the location boss, the lower carriage on be provided with the location shrinkage pool, the location shrinkage pool cooperatees with the location boss and realizes lower carriage and insulating sleeve's location.

In another specific embodiment of the present invention, the positioning concave hole is circular, and the cross-sectional shape of the corresponding positioning boss is also circular.

In another specific embodiment of the present invention, the positioning member and the insulating sleeve are integrally formed, and the positioning boss is directly protruded from the inner wall of the insulating sleeve.

The utility model discloses a still another concrete embodiment, setting element and insulating sleeve adopt to be the components of a whole that can function independently preparation back aggregate erection, the setting element still include the installation department, it is provided with the locating hole to correspond on the insulating sleeve's the inner wall, the installation department with the locating hole cooperate and realize setting element and insulating sleeve's installation.

In still another specific embodiment of the present invention, the positioning hole of the insulating sleeve is circular, and the cross-sectional shape of the mounting portion of the positioning member is also circular.

In yet another specific embodiment of the present invention, the positioning hole of the insulating sleeve is a unthreaded hole, the outer circumferential surface of the mounting portion of the positioning member is a smooth circumferential surface, and the mounting portion of the positioning member is in plug-in fit with the positioning hole of the insulating sleeve; the positioning concave hole is in plug-in fit or threaded connection with the positioning boss.

In a more specific embodiment of the present invention, the positioning hole of the insulating sleeve is a threaded hole, the outer circumferential surface of the mounting portion of the positioning member is a threaded shaft, and the mounting portion of the positioning member is in threaded connection with the positioning hole of the insulating sleeve; the positioning concave hole is matched with the positioning boss in an insertion mode.

In yet another specific embodiment of the present invention, the positioning boss of the positioning member is a smooth circumferential surface, and the positioning concave hole of the corresponding lower bracket is also a light hole, and the positioning member and the lower bracket realize a plug-in type cooperation.

The utility model discloses owing to adopted above-mentioned structure, the beneficial effect who has: firstly, a positioning piece protruding out of the inner wall of an insulating sleeve is used for positioning a lower support, so that the insulating strength of the insulating sleeve is ensured, the insulating requirement of the normal use of the circuit breaker is met, and the use safety of the switch equipment is improved; secondly, simple structure, easy realization, low cost.

Drawings

Fig. 1 is a schematic structural view of an embodiment of a primary conductive structure of the circuit breaker of the present invention.

Fig. 2 is a schematic structural diagram of a lower frame in an embodiment of a primary conductive structure of the circuit breaker of the present invention.

Fig. 3 is a schematic structural diagram of a conductive mechanism in an embodiment of a primary conductive structure of a circuit breaker of the present invention.

Fig. 4 is a schematic structural diagram of a housing in an embodiment of a primary conductive structure of the circuit breaker of the present invention.

Fig. 5 is a schematic structural diagram of another embodiment of the primary conductive structure of the circuit breaker of the present invention.

Fig. 6 is a schematic view illustrating the installation of the positioning member and the lower frame in another embodiment of the primary conductive structure of the circuit breaker of the present invention.

In the figure: 1. an insulating sleeve 11, a positioning hole; 2. the cable connector comprises a conductive mechanism, 21, an upper cable outlet seat, 22, an upper bracket, 23, a vacuum arc-extinguishing chamber, 231, a static end, 232, a movable end, 24, a conductive block, 25, a flexible connection, 26, a lower bracket, 261, a first connecting part, 2611, a first mounting hole, 262, a second connecting part, 2621, a second mounting hole, 263, a third connecting part, 2631, a positioning concave hole and 27, and a lower cable outlet seat, wherein the conductive mechanism is arranged on the upper cable outlet seat; 3. the positioning piece 31, the positioning boss 32 and the mounting part.

Detailed Description

The following detailed description of the embodiments of the present invention will be described with reference to the accompanying drawings, but the description of the embodiments by the applicant is not intended to limit the technical solutions, and any changes made according to the present invention rather than the essential changes should be considered as the protection scope of the present invention.

Example 1

As shown in fig. 1, the present embodiment relates to a primary conductive structure of a circuit breaker, which includes an insulating sleeve 1 and a conductive mechanism 2, wherein the conductive mechanism 2 is disposed inside the insulating sleeve 1, and preferably, the insulating sleeve 1 is formed by casting epoxy resin by using an APG process.

As shown in fig. 1 and fig. 3, the conductive mechanism 2 includes an upper wire outlet base 21, an upper bracket 22, a vacuum interrupter 23, a lower bracket 26, and a lower wire outlet base 27, where the vacuum interrupter 23 includes a conductive block 24 and a flexible connection 25 at one end that is matched with the lower bracket 26. The upper bracket 22 and the lower bracket 26 are positioned in the insulating sleeve 1 and are arranged at intervals up and down, the vacuum arc-extinguishing chamber 23 is arranged between the upper bracket 22 and the lower bracket 26, and the outlet sides of the upper bracket 22 and the lower bracket 26 are respectively provided with an upper outlet seat 21 and a lower outlet seat 27. The insulating sleeve 1 is further provided with an upper wire outlet arm and a lower wire outlet arm (not shown in the figure). One end of the upper wire outlet arm is fixedly connected with the upper plum blossom contact, and the other end of the upper wire outlet arm is fixedly connected with the upper wire outlet seat 21; one end of the lower wire outlet arm is fixedly connected with the lower tulip contact, and the other end of the lower wire outlet arm is fixedly connected with the lower wire outlet seat 27.

Specifically, the vacuum interrupter 23 includes a fixed end 231 fixedly connected to the upper frame 22 and a movable end 232 electrically connected to the conductive block 24 through a through hole of the lower frame 26. The conductive block 24 is electrically connected to the lower support 26 through a flexible connection 25. Thus, a conductive loop is formed, wherein the upper tulip contact, the upper outgoing line arm, the upper outgoing line seat 21, the upper bracket 22, the vacuum arc-extinguishing chamber 23, the conductive block 24, the flexible connection 25, the lower bracket 26, the lower outgoing line seat 27, the lower outgoing line arm and the lower tulip contact are electrically connected with each other.

The inner wall of the insulating sleeve 1 is correspondingly provided with a positioning part 3 protruding from the inner wall, the positioning part 3 and the insulating sleeve 1 are integrally manufactured or assembled and installed after being manufactured in a split mode, and the positioning part 3 is matched with the lower support 26 in a positioning mode. Thereby, the lower bracket 26 is positioned while ensuring the insulation strength of the insulating sleeve 1.

As shown in fig. 1 to 4, specifically, a positioning concave hole 2631 is formed in one side of the lower bracket 26, a positioning element 3 is correspondingly disposed on an inner wall of the insulating sleeve 1, and the positioning element 3 is made of an insulating material. The positioning member 3 is provided with a positioning boss 31, and the positioning concave hole 2631 is matched with the positioning boss 31 in an embedded manner to realize the positioning of the lower support 26 and the insulating sleeve 1. The shapes of the positioning concave hole 2631 and the positioning boss 31 can be defined arbitrarily, preferably, the positioning concave hole 2631 is preferably circular, and the cross-sectional shape of the corresponding positioning boss 31 is also circular. The positioning piece 3 and the insulating sleeve 1 can be integrally manufactured, and can also be assembled and installed after being manufactured in a split mode. In the former case, the positioning boss 31 is directly protruded from the inner wall of the insulating sleeve 1.

As shown in fig. 2, the lower frame 26 includes a first connecting portion 261, a second connecting portion 262 and a third connecting portion 263 are respectively protruded from two ends of the first connecting portion 261 in the same direction, and the first connecting portion 261, the second connecting portion 262 and the third connecting portion 263 may be integrally formed or may be separately formed, and the former is preferably used in this embodiment. The first connecting portion 261 is provided with a first mounting hole 2611 through which the movable end 232 of the vacuum interrupter 23 can pass. The second connecting portion 262 is provided with a second mounting hole 2621, and the lower wire outlet base 27 is screwed into the second mounting hole 2621 after passing through the mounting hole thereon by using a trapezoidal screw, so as to realize the mounting and fixing of the lower wire outlet base 27 and the lower bracket 26. The third connecting portion 263 is provided with the positioning concave hole 2631, and the positioning boss 31 of the positioning element 3 is installed in the positioning concave hole 2631 to be fixed.

Example 2

As shown in fig. 5 and 6, the present embodiment differs from embodiment 1 in that: setting element 3 and insulating sleeve 1 adopt be that the components of a whole that can function independently preparation back installation is integrative, setting element 3 including location boss 31 and installation department 32, it is provided with locating hole 11 to correspond on insulating sleeve 1's the inner wall, installation department 32 and locating hole 11 cooperate the location that realizes setting element 3 and insulating sleeve 1, installation department 32 and locating hole 11's shape can be defined wantonly, in this embodiment, locating hole 11's shape be circular, then the cross-sectional shape of installation department 32 is circular also. The positioning piece 3 is made of an insulating material.

The mounting portion 32 and the positioning hole 11 can be connected by fitting. The said fitting connection includes screw connection or plug-in connection.

When the mounting portion 32 and the positioning hole 11 are connected in an insertion manner, the positioning hole 11 is a unthreaded hole, and the outer circumferential surface of the mounting portion 32 is a smooth circumferential surface. The positioning boss 31 and the lower bracket 26 may be inserted or screwed. When the positioning boss 31 is in insertion fit with the lower bracket 26, the positioning boss 31 is a smooth circumferential surface, and the corresponding positioning concave hole 2631 of the lower bracket 26 is also an optical hole, and the positioning boss 31 and the lower bracket 26 are in insertion fit. When the positioning boss 31 is in threaded fit with the lower bracket 26, the positioning boss 31 is a threaded shaft, the corresponding positioning concave hole 2631 is a threaded hole, and the positioning boss 31 is in threaded fit with the lower bracket 26.

The mounting part 32 is connected with the positioning hole 11 in an insertion manner, and the mounting process when the positioning boss 31 is matched with the lower bracket 26 in a threaded manner is as follows: the positioning boss 31 of the positioning element 3 is first screwed into the positioning concave hole 2631 of the lower bracket 26, and then the mounting portion 32 of the positioning element 3 is inserted into the positioning hole 11 of the insulating sleeve 1.

When installation department 32 and locating hole 11 adopt threaded connection, it is concrete, the locating hole 11 of insulating sleeve 1 is the screw hole, then the outer periphery of the installation department 32 of setting element 3 is the screw axis, installation department 32 and locating hole 11 realize threaded connection. The positioning boss 31 and the lower bracket 26 can be only inserted into connection. To meet the requirements of convenient installation.

The mounting part 32 is connected with the positioning hole 11 by screw thread, and the mounting process when the positioning boss 31 and the lower bracket 26 are matched in an insertion way is as follows: the mounting portion 32 of the positioning element 3 is first screwed into the positioning hole 11 to realize the threaded connection between the positioning element 3 and the insulating sleeve 1, and then the positioning boss 31 is inserted into the positioning concave hole 2631 of the lower bracket 26.

In addition, in this embodiment, the locating element 3 and the insulating sleeve 1 adopt the components of a whole that can function independently preparation back aggregate erection, the workable shrinkage pool that has on the installation department 32 of locating element 3, the processing has corresponding boss on the insulating sleeve 1, realizes locating element 3 and insulating sleeve 1 cooperation installation equally. Other parts and their mounting in this embodiment are the same as those in embodiment 1.

Claims

1. The utility model provides a primary conductive structure of circuit breaker, including insulating sleeve (1) and conductive mechanism (2), conductive mechanism (2) including last wire outlet seat (21), upper bracket (22), vacuum interrupter (23), lower carriage (26) and lower wire outlet seat (27), upper bracket (22) and lower carriage (26) are located insulating sleeve (1) inside and upper and lower interval setting, vacuum interrupter (23) are installed between upper bracket (22) and lower carriage (26), wire outlet seat (21) and lower wire outlet seat (27) are installed respectively to the side of being qualified for the next round of competitions of upper bracket (22) and lower carriage (26), its characterized in that: the inner wall of the insulating sleeve (1) is correspondingly provided with a positioning piece (3) protruding from the inner wall, and the lower support (26) is positioned by the positioning piece (3).

2. The primary conductive structure of the circuit breaker according to claim 1, wherein the positioning member (3) is provided with a positioning boss (31), the lower bracket (26) is provided with a positioning concave hole (2631), and the positioning concave hole (2631) is matched with the positioning boss (31) to realize the positioning of the lower bracket (26) and the insulating sleeve (1).

3. The primary conductive structure of circuit breaker according to claim 2, wherein said positioning recess (2631) is circular, and the cross-sectional shape of the corresponding positioning boss (31) is also circular.

4. The primary conductive structure of the circuit breaker according to claim 2, wherein the positioning member (3) and the insulating sleeve (1) are integrally formed, and the positioning boss (31) is directly protruded from the inner wall of the insulating sleeve (1).

5. The primary conductive structure of the circuit breaker according to claim 2, wherein the positioning element (3) and the insulating sleeve (1) are assembled and installed after being manufactured in a split manner, the positioning element (3) further comprises an installation part (32), the inner wall of the insulating sleeve (1) is correspondingly provided with a positioning hole (11), and the installation part (32) and the positioning hole (11) are matched to realize the installation of the positioning element (3) and the insulating sleeve (1).

6. The primary conductive structure of a circuit breaker according to claim 5, wherein the positioning hole (11) of the insulative sleeve (1) is circular in shape, and the mounting portion (32) of the positioning member (3) is also circular in cross-sectional shape.

7. The primary conductive structure of the circuit breaker according to claim 6, wherein the positioning hole (11) of the insulating sleeve (1) is a unthreaded hole, the outer circumferential surface of the mounting portion (32) of the positioning member (3) is a smooth circumferential surface, and the mounting portion (32) of the positioning member (3) is in plug-in fit with the positioning hole (11) of the insulating sleeve (1); the positioning concave hole (2631) is in plug-in fit or threaded connection with the positioning boss (31).

8. The primary conductive structure of a circuit breaker according to claim 6, wherein the positioning hole (11) of the insulating sleeve (1) is a threaded hole, the outer circumferential surface of the mounting portion (32) of the positioning member (3) is a threaded shaft, and the mounting portion (32) of the positioning member (3) is in threaded connection with the positioning hole (11) of the insulating sleeve (1); the positioning concave hole (2631) is in plug-in fit with the positioning boss (31).

9. The primary conductive structure of the circuit breaker according to claim 3, wherein the positioning boss (31) of the positioning element (3) is a smooth circumferential surface, and the corresponding positioning concave hole (2631) of the lower rack (26) is also an optical hole, and the positioning element (3) and the lower rack (26) realize a plug-in fit.